tree a5036771e339008135c20a5cbbcd9b38744f5726
parent 6f40b2a5dac4b448fe1e8d94dc4238cd95cd5e34
author Andi Kleen <ak@linux.intel.com> 1552603795 -0700
committer Arnaldo Carvalho de Melo <acme@redhat.com> 1553007380 -0300

perf record: Allow to limit number of reported perf.data files

When doing long term recording and waiting for some event to snapshot
on, we often only care about the last minute or so.

The --switch-output command line option supports rotating the perf.data
file when the size exceeds a threshold. But the disk would still be
filled with unnecessary old files.

Add a new option to only keep a number of rotated files, so that the
disk space usage can be limited.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
LPU-Reference: 20190314225002.30108-3-andi@firstfloor.org
Link: https://lkml.kernel.org/n/tip-y5u2lik0ragt4vlktz6qc9ks@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>